Top cover arrangement for a storage and the corresponding storage

ABSTRACT

Embodiments of the present disclosure provide a top cover arrangement for a storage and the corresponding storage. The storage comprises a drawer chassis which accommodates disks that are organized among a plurality of rows. The top cover arrangement covers the disks in a foldable manner and comprises: a substrate covering the disks and being flexible; and a plurality of folding parts mounted on the substrate and corresponding to the plurality of the rows; the folding parts being adapted to be at least partially folded to expose at least one row of disks in response to the disks being pulled out of the drawer chassis.

RELATED APPLICATIONS

The subject application is a continuation of U.S. application Ser. No.15/846,311; filed on Dec. 19, 2017, which claims priority from ChinesePatent Application Number CN201611192935.X, filed on Dec. 21, 2016 atthe State Intellectual Property Office, China, titled “TOP COVER FOR USEIN STORAGE AND ASSOCIATED STORAGE” the contents of which is hereinincorporated by reference in its entirety.

FIELD

Embodiments of the present disclosure generally relate to the field ofstorage, and more specifically, to a top cover arrangement for a storageand the corresponding storage.

BACKGROUND

In the design and utilization of the disk array enclosure (abbreviatedas DAE), one of the challenges is that the time allowing the serviceengineer to expand and/or replace disks (for example, including, but notlimited to, magnetic disk, compact disk, hard disk and U disk and so on)is very short. The heat dissipating effect will deteriorate when thedisk is pulled out of the drawer chassis, which limits the time for theservice engineer to expand and/or replace disks. For example, if thetime for the service engineer to expand and/or replace disks is toolong, the disk might be damaged. Therefore, it is necessary to find aneconomic and easy-to-implement technique that can prolong time for theservice engineer to expand and/or replace disks.

SUMMARY

Various implementations of the present disclosure provide a top coverarrangement for a storage and the corresponding storage to solve theabove and other potential problems of the prior art at least in part.

In one aspect of the present disclosure, there is provided a top coverarrangement for a storage which includes a drawer chassis thataccommodates disks that are organized in a plurality of rows. The topcover arrangement covers the disk in a foldable manner and includes: asubstrate covering the disk and being flexible; and a plurality offolding parts mounted on the substrate and corresponding to a pluralityof rows; the folding parts adapted to be at least partially folded toexpose at least one row of the disks in response to the disk beingpulled out of the drawer chassis.

In another aspect of the present disclosure, there is provided astorage, comprising: a drawer chassis comprising at least one midplanearranged perpendicular to a pulling direction of the drawer chassis, andaccommodating disks that are organized in a plurality of rows and placedagainst the corresponding midplane; a fan accommodated in the drawerchassis and close to a distal end of the drawer chassis, the fan beingarranged along a direction perpendicular to the pulling direction andgenerating suction air for dissipating heat from the disks; and a topcover arrangement for the storage according to the one aspect of thepresent disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

Implementations of the present disclosure are described with referenceto the accompanying drawings only by way of example, in which:

FIG. 1 illustrates a structural schematic diagram of the storageaccording to the implementations of the present disclosure;

FIG. 2 illustrates an exploded structural schematic diagram of the topcover arrangement according to the implementations of the presentdisclosure;

FIG. 3 illustrates a partial structural schematic diagram of the topcover arrangement according to FIG. 2;

FIG. 4 illustrates an overall structural schematic diagram of the topcover arrangement according to FIG. 2 when fully unfolded;

FIG. 5 illustrates an overall structural schematic diagram of the topcover arrangement according to FIG. 2 when fully folded;

FIG. 6 illustrates a schematic diagram of the indicator on the top coverarrangement according to FIG. 2;

FIG. 7 illustrates a schematic diagram of the indicator on the top coverarrangement according to FIG. 2;

FIG. 8 illustrates a structural diagram of the top cover arrangement andthe disk of the corresponding group in a first comparative example;

FIG. 9 illustrates a structural diagram of the top cover arrangement andthe disk of the corresponding group in a second comparative example;

FIG. 10 illustrates a structural diagram of the top cover arrangementand the disk of the corresponding group according to the exampleimplementations of the present disclosure.

DETAILED DESCRIPTION OF EMBODIMENTS

Implementations of the present disclosure will be described withreference to the drawings in detail. It should be noted that similarcomponents or function modules may be represented with the same numberin the drawings. The appended drawings only intend to depict theimplementations of the present disclosure. Without departing from thespirit and scope of protection of the present disclosure, those skilledin the art can obtain alternative implementations from the followingdepiction.

During the operation of the conventional storage, the disk isaccommodated in the drawer chassis; and the air flow (such as thesuction air generated by the fan in the drawer chassis), limited by thedrawer chassis (for example, direction of the air flow is limited),produces heat dissipating effect for the disks. If the disk is pulledout of the drawer chassis at this moment, the disk will be exposed inthe air. As the air flow is not limited by a drawer chassis, the airflow through the disk will be reduced significantly, thus impacting theheat dissipating effect for the disk. More gravely, since the fan isgenerally fixed in the drawer chassis, if the disk is pulled out of thedrawer chassis, then the distance between the fan and the disk willbecome relatively far, and heat dissipating effect of the fan for thedisks will be impacted.

Implementations of the present disclosure can solve one or more of theabove problems. As shown in FIG. 1, implementations of the presentdisclosure provide a storage 200 comprising: a drawer chassis 2, a fan15 and a top cover arrangement 100. The drawer chassis 2 includes atleast one midplane 10 arranged perpendicular to a pulling direction Y ofthe drawer chassis 2. The drawer chassis 2 is used to accommodate disks3 that are generally organized in a plurality of rows 4 (such as forminga disk array 1) and placed against the corresponding midplane. As arule, fan 15 is accommodated inside the drawer chassis 2 and close to adistal end 21 of the drawer chassis 2. The fan 15 is arranged along adirection perpendicular to the pulling direction Y and generates asuction air for dissipating heat from disks 3.

Now, various example implementations of the top cover arrangement 100 ofthe present disclosure are described in detail. As shown in FIGS. 1-2,generally, the top cover arrangement 100 covers the disk 3 in a foldablemanner. The top cover arrangement 100 includes a substrate 5 whichcovers disk 3 and is flexible. The top cover arrangement 100 furtherincludes a plurality of folding parts 6 which are mounted on substrate 5and correspond to a plurality of rows 4. The folding parts 6 are adaptedto be at least partially folded (as shown in FIG. 5) to expose at leastone row of the disks 3 in response to disks 3 being pulled out of thedrawer chassis 2.

In this way, when disks 3 are pulled out of the drawer chassis 2, thefolding parts 6 can be folded at least in part to expose at least onerow of disks 3. Thus, it can be ensured that disks 3 in other rows willnot be exposed when it is necessary to expand and/or replace disks 3 inat least one row of disks, so that the air flow can be limited by thefolding part 6 above disks 3 in other rows, which can maintain heatdissipation for disks 3 in other rows advantageously, prevent damagecaused by too high temperature and prolong the time for the serviceengineer to expand and/or replace disks 3.

For example, FIG. 1 illustrates disks 3 organized in four rows 4, eachrow of disks 3 including a plurality of disks 3 and each row of disks 3being covered in the top cover arrangement 100. For example, the topcover arrangement 100 can be a plate in the form of a strip, where thenumber of the folding parts 6 is the same as the number of a pluralityof rows 4. For example, the number of folding parts 6 shown in FIG. 1 isfour, corresponding to the number of a plurality of rows 4. When thedisks 3 are pulled out of the drawer chassis 2, the folding parts 6 canbe folded to expose, for instance, one row, two rows or three rows ofdisks 3, or continue to be folded so as to be lifted as a whole toexpose four rows of disks 3, thereby expanding and/or replacing disks 3in the corresponding rows.

As shown in FIG. 2, according to an implementation of the presentdisclosure, a plurality of folding parts 6 are mounted on substrate 5abreast along the pulling direction Y of the drawer chassis 2 andlocated within the scope of the substrate 5. In this implementation, theplurality of folding parts 6 mounted abreast on substrate 5 are locatedwithin the scope of the substrate 5 (as shown in FIGS. 2 and 4), therebythe plurality of folding parts 6 can be folded (as shown in FIG. 5) witheach other to facilitate expanding and/or replacing disks 3.

For example, FIG. 2 illustrates that four folding parts 6 are mounted(such as adhered) on substrate 5 abreast along the pulling direction Yof the drawer chassis 2 and located within the scope of the substrate 5.It should be noted that any specific number or numerical value describedherein is only exemplary, with no intent to limit the scope of thepresent disclosure in any manner.

As shown in FIG. 2, according to an implementation of the presentdisclosure, a notch 50 (called as “a first notch”) is arranged at thesubstrate 5 and close to a proximal end 20 of the drawer chassis 2. Acorresponding notch 60 (called as “a second notch”) is arranged on afirst folding part 61 of the plurality of folding parts 6 close to theproximal end 20 of the drawer chassis 2. During the operation, the firstnotch 50 and the second notch 60 are matched with each other tofacilitate lifting the top cover arrangement 100 in use. In thisimplementation, the first notch 50 and the second notch 60 enable theuser, for instance, with a finger, to lift the top cover arrangement 100(as shown in FIG. 4), thereby facilitating expanding and/or replacingdisks 3.

The proximal end 20 of the drawer chassis 2 herein refers to an end ofthe drawer chassis 2 close to the user, as shown in FIG. 2. For example,the service engineer would perform the pulling action at the exit of thedrawer chassis 2. For example, the first notch 50 and the second notch60 shown in FIG. 2 can overlap (for instance, in a U-shape, as shown inFIG. 4) after being matched with each other to enable, for instance, theservice engineer to stick finger therein so as to lift the top coverarrangement 100.

As shown in FIG. 2, according to an implementation of the presentdisclosure, the first folding part 61 of the plurality of folding parts6 that is close to a proximal end 20 of the drawer chassis 2 has adimension smaller than that of further folding parts 62, 63 and 64 ofthe plurality of folding parts 6. In this implementation, the dimensionof further folding parts 62, 63 and 64 can be the same, therebyachieving even distribution. Only as an example, in an implementation,the dimension of substrate 5 can be configured as 538 mm*420 mm*0.1 mm,the dimension of the first folding part 61 can be configured as 420mm*117 mm*0.4 mm, and the dimension of other folding parts 62, 63 and 64can be configured as 420 mm*126 mm*0.4 mm. Without doubt, depending onthe specific requirement and application scenario, any other dimensionis also feasible.

As shown in FIGS. 2-3, according to an implementation of the presentdisclosure, the top cover arrangement 100 further includes: a first linkpart 7 arranged between the plurality of folding parts 6 to enable theplurality of folding parts 6 to be folded with one another. In such animplementation, the first link part 7 can achieve the function similarto that of a hinge so that the plurality of folding parts 6 can befolded with each other. For example, the first link part 7 shown in FIG.2 takes the form of a long strip and its width can be configured as 7mm. Definitely, depending on the specific requirement and applicationscenario, any other dimension is also feasible.

As shown in FIGS. 2-3, according to an implementation of the presentdisclosure, the top cover arrangement 100 further includes a joint part8 which mounts the second folding part 64 of the plurality of foldingparts 6 that is close to the distal end 21 of the drawer chassis 2 tothe distal end 21 of the drawer chassis 2. In this implementation, thesecond folding part 64 can be mounted to the distal end 21 of the drawerchassis 2 via the joint part 8, so that the top cover arrangement 100 asa whole can be mounted on the drawer chassis 2 at one end to make thetop cover arrangement 100 as a whole stable.

For example, the distal end 21 of the drawer chassis 2 is the end of thedrawer chassis 2 away from the user (for example, the service engineerwould normally perform pulling action at the exit of the drawer chassis2), as indicated in FIG. 2. For example, the joint part 8 takes the formof a long strip, and its one end 80 is connected to one side of thesecond folding part 64 and the other end 81 is mounted to the distal end21 of the drawer chassis 2. Only as an example, the length and width ofjoint part 8 can be configured as 412 mm and 8 mm, respectively. Ofcourse, depending on the specific requirement and application scenario,any other dimension is also possible.

According to an implementation of the present disclosure, the bottom 82of the joint part 8 is adhered to the substrate 5 and jointed to thesecond folding part 64 via the second link part 9. In such animplementation, the second link part 9 can achieve the function similarto that of a hinge, so that the second folding part 64 can be liftedwith respect to the drawer chassis 2 (as shown in FIG. 4). For example,the second link part 9 can take the form of a long strip with a width of14 mm, for instance. Of course, depending on the specific requirementand application scenario, any other dimension is also feasible.

With reference to FIGS. 1 and 2, according to an implementation of thepresent disclosure, the drawer chassis 2 includes at least one midplane10 which is arranged perpendicular to the pulling direction Y of thedrawer chassis 2, and the midplane is used to separate a plurality ofrows 4 and is covered by a plurality of folding parts 6. In such animplementation, the midplate 10 can separate a plurality of rows ofdisks, and the midplane 10 can be covered with the corresponding foldingparts 6 above so that the folding parts 6 can cover the disks of thecorresponding rows to limit the flow direction of the air flow.

According to an implementation of the present disclosure, the substrate5 is made of polyester and the plurality of folding parts 6 arepolycarbonate membrane. In such an implementation, the substrate 5 madeof polyester has high flexibility and is easy to fold and lift, whilethe plurality of folding parts 6 of polycarbonate membrane have lowflexibility (such as having a certain hardness) and can cover disks of acorresponding row. For example, the plurality of folding parts 6 issupported on the corresponding midplane 10 and maintains a distance withdisks 3.

For example, as the top cover arrangement of the present disclosurecombines two different materials (namely, a substrate 5 made ofpolyester and folding parts 6 made of polycarbonate membrane), it ispossible to achieve the technical effect of being folded easily.

According to an implementation of the present disclosure, the top coverarrangement 100 can be switched among a plurality of states. Forexample, in the state that the top cover arrangement 100 is completelypushed into the drawer chassis 2, the top cover arrangement 100 coverson the disks 3. In the state that the top cover arrangement 100 ispulled out of drawer chassis 2 without the disks 3 being required to beexpanded and/or replaced, the top cover arrangement 100 covers on disks3. In the state that top cover arrangement 100 is pulled out of drawerchassis 2 with the disks 3 being required to be expanded and/orreplaced, the top cover arrangement 100 is lifted to fold at least apart of the plurality of folding parts 6 so as to expose at least onerow of disks 3. With the operation of the user, the top coverarrangement 100 can be configured in the corresponding state.

In such an implementation, if the top cover arrangement 100 iscompletely pushed into the drawer chassis 2, then it is usually not ableto expand and/or replace disks. Hence, the top cover arrangementcovering on disks 3 will limit the flow direction of the air flow. Ifthe top cover arrangement 100 is pulled out and it is not necessary toexpand and/or replace disks (such as only observing the top coverarrangement), then the top cover arrangement covering on disks 3 willlimit the flow direction of air flow. If the top cover arrangement 100is pulled out and it is necessary to expand and/or replace disks, thenthe top cover arrangement 100 can be lifted to expose at least one rowof disks 3, thereby facilitating expanding and/or replacing diskswithout influencing the heat dissipating effect of disks in other rows.

As shown in FIGS. 6-7, according to an implementation of the presentdisclosure, the top cover arrangement 100 further includes at least oneof the following: a functional indicator 11 indicating the functionalstate of disks 3; an operational indicator 12 promoting user's operationmanner; and a warning indicator 13 providing warning information. Insuch an implementation, various indicators can be configured on the topcover arrangement 100, thereby achieving the effect of functionalindication (such as indicating the numerical number or function of thedisk or indicating function of the LED light showing the current stateof the disk), operational indication (such as indicating the manner ofoperation, for example, aligning the edges of the drawers when the diskis replaced) or a warning indication (such as WARNING).

Through the above description, it will be appreciated that according tothe implementations of the present disclosure, drawer chassis 2 can bepulled out when it is necessary to expand and/or replace disk 3 in atleast one row of disks. Then the folding parts 6 can be folded at leastin part to expose disk 3 in at least one row of disks such that when itis necessary to expand and/or replace disk 3 in at least one rows ofdisks, the disk 3 in other rows will not be exposed in order that theair flow can be limited by folding parts 6 above disk 3 in other rows todissipate heat from disk 3 in other rows and prevent damage caused byhigh temperature and prolong time for service engineer to expand and/orreplace disk 3.

For example, the circuit for mounting fan 15 and the disk array 1 can beconnected with each other via cable 16, so that when the disk 3 in thedisk array 1 is pulled out of the drawer chassis 2, it can still beelectrically connected with the corresponding circuit (such as thecontrol circuit) in the drawer chassis 2. Cable 16 has some flexibilityand thus, can maintain flexibility during the pulling process of thedisk array 1.

Next, with reference to FIGS. 8-10, the advantage of the top coverarrangement structure in the example implementation according to thepresent disclosure over top cover arrangements of other structures willbe described in detail. FIG. 8 illustrates a structural diagram of thetop cover arrangement in the first comparative example and the disk inthe corresponding group; FIG. 9 illustrates a structural diagram of thetop cover arrangement in the second comparative example and the disk inthe corresponding group; and FIG. 10 illustrates a structural diagram ofthe top cover arrangement according to the example implementations ofthe present disclosure and the disk in the corresponding group.

A FIRST COMPARATIVE EXAMPLE

As shown in FIG. 8, in the first comparative example, the top coverarrangement has 4 individual cover pieces, each cover piece covering arow of disks, wherein four rows with 72 disks in total are separatedinto eight groups (where the disk is represented by DISK # and the groupis represented by SSD Group #). Take the expansion disk as an example toillustrate the first comparative example, where the expansion of disksis completed based on grouping. For example, if there is only group 1,then it can be expanded to group 1+group 2. The top cover arrangement ofthis structure in the first comparative example can achieve the functionas shown in Table 1 (where symbol “:” represents “to”, “+” representsexpansion and the number represents the mark number of the group).

TABLE 1 Expanding based on group whether can achieve heat dissipatingeffect +2 or +2:3 or +2:4 yes +3 or +3:4 yes +5 yes +6 or +6:7 or +6:8yes +7 or +7:8 yes

As shown in Table 1, as four individual cover pieces are employed, whenonly group 1 exists (covered by an individual cover piece to achieveheat dissipating effect), it can be expanded to group 2, group 2 togroup 3, or group 2 to group 4 (under this condition, it can be expandedwithout affecting heat dissipation of group 1; and after expansion, anindividual cover piece can be used for coverage to achieve heatdissipating effect).

When there only exist group 1+group 2 (covered by two individual coverpieces to achieve heat dissipating effect), it can be expanded to group3, or group 3 to group 4 (then it can be expanded by lifting the coverpiece above group 2 without affecting heat dissipation of group 1; andafter expansion, the cover piece can cover group 2 and the expandedgroup).

When there exist only group 1-group 4, it can be expanded to group 5(then it can be expanded without affecting heat dissipation of group1-group 4; and after expansion, an individual cover piece can be usedfor coverage to achieve the heat dissipating effect).

When there exist only group 1-group 5, it can be expanded to group 6,group 6 to 7, or group 6 to 8 (then it can be expanded without affectingheat dissipation of group 1-group 5; and after expansion, an individualcover piece can be used for coverage to achieve the heat dissipatingeffect).

When there exist only group 1-group 6, it can be expanded to group 7, orgroup 7-8 (then it can be expanded by lifting the cover piece abovegroup 6 without affecting heat dissipation of group 1-group 5; and afterexpansion, the cover piece covers group 6 and the expanded group).

Thus, though all the expansion actions can be achieved by the top coverarrangement with four individual cover pieces, since the four individualcover pieces are separated from each other, their positions are easilymoved and cannot cover the disk stably, which presents a disadvantage.

A SECOND COMPARATIVE EXAMPLE

As shown in FIG. 9, in the second comparative example, the top coverarrangement has two individual cover pieces (compared with the firstcomparative example, the dimension of a cover piece in the secondcomparative example is two times the dimension of a cover piece in thefirst comparative example, and thus can cover two rows of disks), wherefour rows with 72 disks in total are separated into eight groups. Takethe expansion disk as an example to illustrate the second comparativeexample, where the expansion of disks is completed based on grouping.For example, if there is only group 1, then it can be expanded to group1+group 2. The top cover arrangement of this structure in the secondcomparative example can achieve the function as shown in Table 2 (wheresymbol “:” represents “to”, “+” represents expansion and the numberrepresents the mark number of the group).

TABLE 2 Expanding based on group whether can achieve heat dissipatingeffect +2 or +2:3 or +2:4 no +3 or +3:4 no +5 yes +6 or +6:7 or +6:8 no+7 or +7:8 no

As shown in Table 2, since two individual cover pieces are employed,each cover piece covers two rows of disks:

When there only exist group 1 (covered by an individual cover piece toachieve heat dissipating effect), if the cover piece above group 1 islifted, heat dissipation of disks in group 1 will definitely beaffected. Therefore, it cannot be expanded to group 2, group 2 to group3, or group 2 to group 4.

When there only exist group 1+group 2 (covered by an individual coverpiece to achieve heat dissipating effect), if the cover piece abovegroup 1 is lifted, heat dissipation of disks in group 1 will definitelybe affected. Therefore, it cannot be expanded to group 3, or group 3 togroup 4.

When there only exist group 1-group 4, it can be expanded to group 5(under this condition, it can be expanded without affecting heatdissipation of group 1-group 4; and after expansion, an individual coverpiece can be used for coverage to achieve heat dissipating effect).

When there only exist group 1-group 5, if the cover piece above group 5is lifted, heat dissipation of disks in group 5 will definitely beaffected. Therefore, it cannot be expanded to group 6, group 6-group 7,or group 6-group 8.

When there only exist group 1-group 6, if the cover piece above group 6is lifted, heat dissipation of disks in group 5 will definitely beaffected. Thus, it cannot be expanded to group 7, or group 7 to group 8.

Hence, compared with the first comparative example, the top coverarrangement of this structure in the second comparative example has lessfavorable heat dissipation effect and the position is easy to move suchthat it cannot cover the disk stably. Generally speaking, it does nothave sound practical applicability.

Implementations of the Present Disclosure

As shown in FIG. 10, in the implementations of the present disclosure,the top cover arrangement has four foldable folding parts, each foldingpart covering a row of disks, where four rows with 72 disks in total areseparated into eight groups. Take the expansion disk as an example toillustrate the implementations of the present disclosure, where theexpansion of the disks is completed based on grouping. For example, ifthere is only group 1, then it can be expanded to group 1+group 2. Thetop cover arrangement of this structure in the implementations of thepresent disclosure can achieve the function as shown in Table 3 (wheresymbol “:” represents “to”, “+” represents expansion and the numberrepresents the mark number of the group).

TABLE 3 Expanding based on group whether can achieve heat dissipatingeffect +2 or +2:3 or +2:4 yes +3 or +3:4 yes +5 yes +6 or +6:7 or +6:8yes +7 or +7:8 yes

As shown in Table 3, since four foldable folding parts are employed,each folding part only covers a row of disks:

When only group 1 exists (covered by a folding part to achieve heatdissipating effect), it can be expanded to group 2, group 2 to group 3,or group 2 to group 4 (under this condition, it can be expanded withoutaffecting heat dissipation of group 1; and after expansion, a foldingpart is used for coverage to achieve heat dissipating effect).

When there only exist group 1+group 2 (covered by two folding parts toachieve heat dissipating effect), it can be expanded to group 3, orgroup 3 to group 4 (then it can be expanded by lifting the folding partabove group 2 without affecting heat dissipation of group 1; and afterexpansion, the folding part covers group 2 and the expanded group).

When there exist only group 1-group 4, it can be expanded to group 5(then it can be expanded without affecting heat dissipation of group1-group 4; and after expansion, a folding part can be used for coverageto achieve the heat dissipating effect).

When there exist only group 1-group 5, it can be expanded to group 6,group 6 to 7, or group 6 to 8 (then it can be expanded without affectingheat dissipation of group 1-group 5; and after expansion, an individualcover piece can be used for coverage to achieve the heat dissipatingeffect).

When there exist only group 1-group 6, it can be expanded to group 7 orgroup 7-8 (then it can be expanded by lifting the folding part abovegroup 6 without affecting heat dissipation of group 1-group 5; and afterexpansion, the folding part covers group 6 and the expanded group).

Therefore, compared with the first comparative example and the secondcomparative example, the implementations of the present disclosure,owing to the top cover arrangement with four folding parts, can achieveall of the expanding actions. Meanwhile, as four folding parts can befolded with each other, and, for example, can be fixed in a drawerchassis at one end, they can cover the disk stably. When it is necessaryto expand and/or replace disks, the operation can be implemented only bylifting or folding the top cover arrangement, thereby prolonging theoperation time for the service engineer, which presents a less costlymethod with more practical applicability.

Through the above comparison, it can be seen that the top coverarrangement in the implementations of the present disclosure can achievemultiple advantages, including but not limited to: the top coverarrangement according to the present disclosure can be used in a diskarray enclosure (such as a next-generation XtremIO hardware) to lengthentime for the service engineer to expand and/or replace disks afterpulling out the drawer chassis in order to meet the heat dissipatingrequirement of the disk (for example, to ensure that the temperaturewhen the disk is pulled out of the drawer chassis is no higher than 40°C.).

Through the above depiction and the teaching given by the drawings, manymodifications and other implementations of the present disclosure can berealized by those skilled in the art related to the present disclosure.Therefore, it is to be understood that the implementations of thepresent disclosure are not limited to the specific implementationsdisclosed herein, and the modifications and other implementations areintended to be included in the scope of the present disclosure.Furthermore, though the above depiction and associated drawings describethe example implementations under the context of some examplecombinations of components and/or functions, it should be realized thatalternative implementations can provide different combinations ofcomponents and/or functions without departing from the scope of thepresent disclosure. In this respect, for example, other forms ofcombinations of components and/or functions different from thosedescribed explicitly above are also expected to be included in the scopeof the present disclosure. Although specific terms are employed here,they are used in a general and descriptive sense rather than forlimiting purpose.

We claim:
 1. A top cover arrangement for a storage, the top coverarrangement comprising: a substrate, wherein the substrate is configuredto cover a drawer chassis of the storage, wherein the drawer chassiscomprises: one or more disks organized among a plurality of rows,wherein the plurality of rows are separated into one or more groups; atleast one midplane arranged successively along a pulling direction ofthe drawer chassis, wherein the plurality of rows of the one or moredisks are placed against a corresponding midplane of the at least onemidplane; and one or more fans, wherein the one or more fans areconfigured to generate a suction air to effectuate a heat dissipatingeffect from the one or more disks; and a plurality of folding partsmounted on the substrate, wherein the plurality of folding partscorrespond to the plurality of rows such that when the one or more disksare pulled out of the drawer chassis the plurality of folding parts areconfigured to at least partially fold to expose a respective row of theplurality of rows, wherein the plurality of rows and the one or morefans are connected via a cable configured to maintain an electricalconnection between the drawer chassis and a corresponding circuit whenthe plurality of rows disks are pulled out of the drawer chassis, andwherein when the one or more disks are pulled out of the drawer chassisthe heat dissipating effect is expanded from a respective group to oneor more successive groups of the one or more groups associated with therespective row that houses a respective disk of the one or more disks.2. The top cover arrangement according to claim 1, wherein the pluralityof folding parts are arranged abreast on the substrate along the pullingdirection of the drawer chassis and within the range of the substrate.3. The top cover arrangement according to claim 1, wherein a first notchis arranged at an edge of the substrate closest to a front-most portionof the drawer chassis, a second notch is arranged on a first foldingpart of the plurality of folding parts closest to the front-most portionof the drawer chassis, and the first notch and the second notch arematched with each other to facilitate lifting the top cover arrangementin use.
 4. The top cover arrangement according to claim 3, wherein thefirst folding part of the plurality of folding parts that is closest tothe front-most portion of the drawer chassis has a dimension smallerthan that of further folding parts of the plurality of folding parts. 5.The top cover arrangement according to claim 1, further comprising: afirst link part arranged between the plurality of folding parts, whereinthe first link is configured to enable the plurality of folding parts tobe folded with one another.
 6. The top cover arrangement according toclaim 1, further comprising: a joint part configured to mount a secondfolding part of the plurality of folding parts that is closest to arear-most portion of the drawer chassis to the rear-most portion of thedrawer chassis.
 7. The top cover arrangement according to claim 6,wherein a bottom of the joint part is adhered to the substrate andjointed to the second folding part via a second link part.
 8. The topcover arrangement according to claim 1, wherein the substrate is made ofa polyester material, and the plurality of folding parts are made of apolycarbonate membrane.
 9. The top cover arrangement according to claim1, wherein: the top cover arrangement covers the plurality of rows whenthe plurality of rows are fully pushed into the drawer chassis; the topcover arrangement covers the plurality of rows when the plurality ofrows are pulled out of the drawer chassis without exposing one or moredisks of the one or more disks; and the top cover arrangement is liftedto fold at least a part of the plurality of folding parts so as toexpose at least one row of the plurality of rows when the plurality ofrows are pulled out of the drawer chassis to expand or replace one ormore disks of the one or more disks.
 10. The top cover arrangementaccording to claim 1, further comprising one or more of: a functionalindicator indicating the functional state of the disks; an operationalindicator promoting a user's operational manner; and a warning indicatorproviding warning information.
 11. A disk drive storage unit,comprising: a drawer chassis comprising: one or more disks organizedamong a plurality of rows, wherein the plurality of rows are separatedinto one or more groups; at least one midplane arranged successivelyalong a pulling direction of the drawer chassis, wherein the pluralityof rows of the one or more disks are placed against a correspondingmidplane of the at least one midplane; and one or more fans, wherein theone or more fans are configured to generate a suction air to effectuatea heat dissipating effect from the one or more disks; and a top coverarrangement for the disk drive storage unit, the top cover arrangementcomprising: a substrate, wherein the substrate is configured to cover atop of the drawer chassis of the disk drive storage unit; a plurality offolding parts mounted on the substrate, wherein the plurality of foldingparts correspond to the plurality of rows such that when the one or moredisks are pulled out of the drawer chassis the plurality of foldingparts are configured to at least partially fold to expose a respectiverow of the plurality of rows, wherein the plurality of rows and the oneor more fans are connected via a cable configured to maintain anelectrical connection between the drawer chassis and a correspondingcircuit when the plurality of rows disks are pulled out of the drawerchassis, and wherein when the one or more disks are pulled out of thedrawer chassis the heat dissipating effect is expanded from a respectivegroup to one or more successive groups of the one or more groupsassociated with the respective row that houses a respective disk of theone or more disks.
 12. The disk drive storage unit of claim 11, whereinthe plurality of folding parts are arranged abreast on the substratealong the pulling direction of the drawer chassis and within the rangeof the substrate.
 13. The disk drive storage unit of claim 11, furthercomprising: a first notch arranged at an edge of the substrate closestto a front-most portion of the drawer chassis, and a second notcharranged on a first folding part of the plurality of folding partsclosest to the front-most portion of the drawer chassis, wherein thefirst notch and the second notch are matched with each other tofacilitate lifting the substrate from the top of the drawer chassis. 14.The disk drive storage unit of claim 13, wherein the first folding partof the plurality of folding parts that is closest to the front-mostportion of the drawer chassis has a dimension smaller than that offurther folding parts of the plurality of folding parts.
 15. The diskdrive storage unit of claim 11, further comprising: a first link partarranged between the plurality of folding parts, wherein the first linkis configured to enable the plurality of folding parts to be folded withone another.
 16. The disk drive storage unit of claim 11, furthercomprising: a joint part configured to mount a second folding part ofthe plurality of folding parts that is closest to a rear-most portion ofthe drawer chassis to the rear-most portion of the drawer chassis. 17.The disk drive storage unit of claim 16, wherein a bottom of the jointpart is adhered to the substrate and jointed to the rear-most foldingpart via a second link part.
 18. The disk drive storage unit of claim11, wherein the substrate is made of a polyester material, and theplurality of folding parts are made of a polycarbonate membrane.
 19. Thedisk drive storage unit of claim 11, further comprising one or more of:a functional indicator indicating the functional state of the disks; anoperational indicator promoting a user's operational manner; and awarning indicator providing warning information.